Nut-lock.



. D. WILSON.

NUT LOOK.

/ APP'LICATION FILED AUG. 20,1906. 915,642.

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witnesses PatentedMar.;16;"l909.

DAVID WILSON, SPOKANE, WASHINGTON.

NUT-LOCK.

Specification of Letters Patent.

Patented March 16, 1909.

Application filed August 20, 1908. Serial No. 449,479.

To all whom it may concern:

Be it known that I, DAVID WILsoN, a citizen of the United States, residing at Spokane in the county of Spokane and State of I'Vashgage the sides 'of a nut to lock the latter against rotation.

In the drawings, Figure 1 is a side view' of a' bolt showing the manner of engaging the present nut-lock thereto and engaging the same with a nut and the material with which the bolt is engaged; Fig. 2 is a perspective view of the nut-lock showing parts in a position when engaged with'a nut; and Fig. 3 is a perspective view ofthe nut lock before it has een bent to engage a nut.

Having thus described the invention what is claimed is:

Referrin to thedrawings, there is shown in dotted nes in Fig. 1, beams or other objects to be clamped, A and B, through which-is passed a bolt C, having the usual head D and the threaded end E, to receive a nut F.

The nut lock comprises a washer plate formed from a single piece of flexiblesheet metal, and has a body portion 2, in which is formed an opening 3, to receive the bolt C. The plate thus serves as a washer for the nut and the body portion above referred to is of substantially the same width as the nut.

Asameans forlocking the nut to the washer plate, I have provided the body portion 2 with radially projecting tongues 4, which are equally spaced and are located substantially at right angles to each other. These loclnng tongues are adapted to beturned up against the sides of the nut, and ,the body portion 2 is of such width that the locking tongues 4 when turned against the sldes of the nut, are substantially parallel thereto, and in contact with the side of the nut. The locking tongues therefore, firmly engage the nut and prevent all rotation of the nut relative to the washer plate. As a means 101 locking the washer plate from turning, I have cut away the material between each pair of the locking tongues so asto form pointed spurs which project radially from the body portion of the washer. Said spurs are each bent downward and lie in a plane which is substantially at right angles to a radial plane passing centrally through said spurs. The spurs are also located substantially at right angles to the body portion of the washer. The spurs are so disposed that as the nut is turned, the extreme outer portions or corners of the nut will pass over the washer plate directly above the spurs. It will readily be seen therefore, ,that when the nut is turned on to thebolt,

pressure is applied to the washer directly over the spurs and the spurs will be embedded in the structure being clamped by the bolt.

It will also be seen that the s urs lying in a plane at right angles to a radia planepassing through the spur is so disposed that the rotating strain placed on the washer is in the plane of the spur which greatly strengthens the grip of the washer plate on the object in which the spurs are embedded. 7

Having thus described the invention what is claimed is:

The herein described nut lock, comprising a washer plate formed of asingle' piece of I flexible sheet metal having a body portion with a central 0 ening to receive the bolt,

equally spaced ocking tongues projecting radially from-the body portion and adapted to be bent up parallel to and into contact with the sides of the nut, the adjacent tongues being locatedsubstantially' at right angles to each other, the material between the tongues beingcut away to form pointed spurs projecting radially from the body portion, each of said spurs being bent at substantially right angles to the body portion and 1 'ng in a plane at ri ht angles to a radial p ane pass ing centra ly through said spur, said spurs being disposed within the extreme outer portions of the nut,whereby as the nut is turned pressure is applied to the washer directly over said spurs.

In testimony whereof I hereunto aiiix my signature in the presence of two witnesses.

DAVID WILSON. l i itnesses: I

T. M. Tnianr, H. F. MGQUAY. 

